Gas-producing furnace.



R. HIIJPRBCHT.

GAS PEODUGING FURNAGE.

APPLICATION FILED DBO. 17, 1909. EBNBWBD Nov. 7, 1910.

979,95 l Patented Deo. 27, 1910.

4 SHEETS-SHEET l,

attenua, Y

E. HILPRBGBT. GAS -PBODUGING PURNAGE.

1111110111011 rum) 111141.17, 1909. xmmwnn Nov. 7, 1910.

Patented Dec. 27, 1910.

4 SHEETS-SHEET 2V R. HILPREGHT. GAS PRODUGING FURNAGE. APPLIOATION FILED DB0. 17, 1909. RBNBWBD Nov. 7, 1910.

4 SHEETS-SHEET 3.

Patented Dec. 27, 1910.

3. HILPRECHT'. GAsyRoDUoING FURNAGE. APYLIOATION FIL DEG. 17, 1909. BENEWED NOV.

7, 1910. n Pateted Dec. 27, 1910.

4 SHEETS-SHEET 44 I wi Imagna ees-rneiincine rammen.

atenei.

Specification of Letters Patent.

Patented nee. er, ieie.

application led December 17, 1909, Serial No. 533,737. Renewed November 7, 1910. Serial No. 591,117.

To all whom it may co 7cern:

Be it known that l, ROBERT Hinriuioiii, a resident of the United States, and subject of the Emperor of Germany, residing at Lansing, in the county of Ingham and State of Michigan, have invented certain new and useful Iiiiprovenient's in Gas-Producing Fui'- naces, of whiPch the following is a specification.

rihis invention relates to an improvement in gas making machines, being particularly directed to a producer in which the gas is manufactured or liberated by combustion of coal products.

The' main object of the present invention is the provision of a gas producer in which vand gas is distilled from the coal product` so that llie dist illate in ay be readily directed to the `point of maximum combustion to consume the tar.

The invention ivill be described in the fol- 'loiving specification, reference being had particiilarlv to the accompanying drawings,

' in which Figure 1 is a vertical longitudinal sectional view of my improved gas making uia- A chine.r Fig. 2 is a horizontal sectioiialif'ievv on the lino 2MB, of Fig. yl. Fig. H3, is a horizontal sectional vieu' on the liiio-.,

of Fig. l. Fig. 4 a horizontal sectional view ou the liue "l--4, of Fig. 1. 4Fig. 5 is 1a. ser-.tioi'ial view ou the line i145, Fig. 1.

.provide what will be hereinafter termed a Giver-lire chamber 5, au ngipcr firel chamber 6, and a coal supply nhaiiiliei T, these chainbera being.arranged in4 vertical alinen'ient ceutirallyof the fiiinai'ie. Above the' lower fire chamber and interiorly of the furnace there is arranged a cylindrical section of fire brick 8, disposed in spaced relation to the lining 3 to form a gas chamber 9. At the upper end of the section 8 there is arranged a transverse section 10 of refractory material, which is practically an extension of the lining 3 and forms a closure for the' upper end of the gas chamber 9. Above ythe section 1() there is arranged a conical section ofrefractory materiallhivhich is dis'- posed iiiispaced relation tothejlining to provide a combustion chamber l2, said lin.-

.ingV section .lllbeing formed adjacent its connection with the section 10 With a series of openings 13 which lead directly into the upper lire chamber 6, to provide communication between the coinbustionchamber*and the fire chamber. j

The coal supply chamber is in the form of a metallic sleeve-like section 14 Which depends Within the conical sectioni11 and is of less diameter than thev minimum diameter of said section, thereby providing What Will be hereinaftertermed a gas space 15 between i' the sections 11 and 14. `The supply section 1l supported upon a sleeve-.like cast-inglA which rests upon and is secured to the upper portion ofthe furnace, said casting having a diameter approximating the minimum diameter of the section 11 so that between the Wall of the casting and the supply section 14C there is provided what may be termed a. continuation of the gas space 15. The casting section 16 is extended above the upper end of the supply section 14 and is formed to receive and support a hopper 17 whereby the coal product may be delivered to the supply section 1d. v lateral pipe section 18 is siipjjiorted bythe sleeve icasting 1G and is iu open communication with thesupply section 11 by, virtue oflhel reduced. diameter 'of the lower end of the hopper, and said pipe section supports an injector pipe 19- leading to the'interior of the pipe section from any suitable source of compressed air or steam supply. The pipe section 18 is,

through t-he'medium of a series of injector' nozzles 20, -in communication with a feed pipe 21 Which lead through the upper Wall of the furnace into the combustion chamber 12, said feed pipe 21 being in cominunication with the atmosphere through a lateral bypass 22. 1

Encircliug the furnace at a point about midway of the 4upper fire chaml'ier' 6 is a `blast ring 23 having a series of radial pipe Aijio l: 55 are open and all others are closed. The air sections 24, which extend into. the lining section 10 and communicate by means of openend toi the atmosphere,v the air supply' through which is controlled lby means of a damper 27 arranged in said upper end. The

stand pipe 26 leads to and is in direct communication with the blast ring 23,'extending above and below the same, as shown. At the lower end the stand pipe communicates with a lower blast ring 28, which encircles the furnace'and at appro riate points is in communication through epending supply duets 29 with blast p1pe sections 30 extending through the wall of the furnace and into the lower tire chamber at the lower portion thereof. The stand pipe, at the lower end, is also in communication with an air supply pipe 31, controlled by a damper 32 and in communication with any suitable source of air under pressure. as a blower or the like.

lVit'hin the stand 'pipe 26 is arranged a gas transferring pipe 33, which is closed against the stand pipe except at the lower end of said transferring pipe, and the communication at this point is controlled throue'h the medium of a valve 34. The gas transferring pipe extends at the upper end laterally through one wall of the stand pipe and is in communication with thegas space 15 at the upper portion of thefurnace, a valve 35 controlling this communication at will. y

jin escape pipe 3o is arranged in the combustion chamber 12 and thereby in open communication with the interior of the furnace through the openings 13. The escape pipe 36 leads to a chimney or other escape flue and is controlled by a valve 3T. A. gas supply pipe 38 is arranged in communication with the gas chamber i), preferably vat the upper portion of the latter, and if desired the initial blast supplied by the blower through pipe 31 may be supplemented by an additional pressure pipe 15) leading from a stea m supply.

lVith the parts of the furnace constructed and arranged as described the operation is as follows: The soft coal is supplied in desired quantity through the hopper to the supply section 1.4-, assuming thc tire to have been already started. l`he valves 37 and 32 blast admitted to the pipe 31 is directed to fthe lower fire chamber through the blast pipes 30 and to the upper fire chamber through the laterals 25 from the blast` ring 23, reaching both fire chambers through the stand pipe 2li. When the tire has reached a point sutiicient to generate gas, as shown by the gas testing cocks (not illustrated), the interior of the furnace will present a hot fire mass from the bottom of the furnace to is claimed as new', is

practically the lower edge of the supply section 14, and the pro-ducts of combustion will befescaping ythrough the pipe 36. The injeetor is then operated through pipe 19, drawing off the tar and smoke by suction through the supply section 14, the pipe 18, and by means of the pipe 21 directing the same back into the combustion chamber 12.

The gas products are thus consumed by the fire in the upper fire chamber and by the heat in the combustion chamber, as there is no other course of travel for the material. The gas'supply pi e 38 is connected through a vaporizer, not s own, directly to the gas engine designed to `utilize the gas generated in the producer. When ,the gas is in sufficient quantity to operatethe engine, the latter is started land the valves 32 and 37 are closed, the remaining valves being opened.

The suction induced by the engine is then, by reason of the peculiar construction described, entirely suiicient for maintaining the lproducer in operation for delivering a practically clean gas, as it will be understood that the suction of the engine'will drawair from the atmosphere through the stand pipe 26 and thereby supply both the blast rings andthe lower blast ring 28l with air for combustion purposes. The gas after being cleaned by burnlng the tar and the like 'therefrom in the upper lire chamber will,

under the suction of the engine, be directed through the gas space l5 and through the gas transferring pipe 33 to and through the lower blast ring 28, reaching the .interior of the furnace and being'directed to the gas chamber 9 and so through the feed pipe. It is, of course, understood that the gas in its travel through the lower fire chamber will not deteriorate as the material in said chamber is practically a clear coke. As the supply of gas generated, cleaned, and delivered to the gas chamber 9 depends particularly upon the condition ef the fire, and such condition is primarily controlled by the supply of air delivered through the blastv rings, it is obvious that the suction from the engine, or more directly the pull of the load on the enf gine controls the gas supply. By arranging the gas transferring pipe within the stand pipe I am enabled to utilize the-heat from the gas traveling in the former to the alr passing through the latter, thereby delivering the air supply to the tires in a. heated coi'idition, facilitating combustion.

Having thus described the invention what 1. A gas producing furnace including an upper tire chamber, a lower .fire chamber, a coal supply chamber extending Within the upper end of the furnace with a. gas space surrounding the same, a combustion chamber encircling and in open communication with the upper fire chamber, and means for w1thdrawing the gas supply from the upper fire chamber and delivering thesame to the com.`

bustion chamber. 2. A gas producing furnace Vincluding an upper fire chamber, a lower fire chamber,a

' with the upper're chamber, and an injector bers, and gas transferring pipe in com' arranged; beyond the furnace and operating to withdraw the gas from the upper re chamber and deliver' the same tothe combustion chamber.

' 3. A gas producing furnace including an upper fire chamber, a lower fire chamber, a coal supply section said section beingV arranged within the furnace to provide a gas space between the section and furnace in open -communication with the upper lire chamber, a combustion chamber having communication with the ire chamber beneath the lower end of the coal supply sect-ion, means for delivering as from the gasy space -to the lower irexchame'r and an air supply pipe surrounding the gas delivering means. 14:. A gas producing furnace including an upper fire chamber, a lower re-chamber, a coal supply section, said section being arranged within the furnace to provide -a gas space b etween thel section and furnace in open communication with the upper v fire chamber, a combustion cham-ber having 'communication with the re chamber beneath the lower end of the coal supply section, an air supply pi for delivering air to both the upper an lower fire chambers, and a -gas transferring pipe in, communication with `the as space and arranged withln the air Supp y Pipe y 5. A gas producmg furnace mcludmg an -upper fire chamber, a lowerfire chamber, a

coal supply section, said section being ar-l I ranged within the furnace to provide a gas l`space between the section and furnace in open communication with the u per fire chamber, an air supply pipe for elivering y air to both the upper and lower fire champipe having .valved communication with the air supply pipe. Y l

6. A gas producing furnace comprising an outer shell, an --upper fire chamber, alower fire chamber, a coal supply section in axial alinement therewith andgj-exte'nding within the upper lire chamber withl an annular gas space surrounding the same, means for delivering a blast of air to the upper re chamber, and a combustion chamber above and in communication with the upper f ire chamber below the inner end of the coal supply section, and an escape pipe in communication with said combustion chamber and the interior of the shell.

l 7. 'A gas producing furnace upper fire chamber, a lower re chamber, a

'coal sii` ply section above the upper fire chambei with a gas space surrounding the same, a blast ring encirclingfthe furnace adjacent the upper fire chamber, communi-4 cating pipes between the blast rrng and, upper re chamber, and'an air supp y pipe in communication with the blast ring.

furnace having an 8. A gas producine` blower fire chamber, a

upper ire chamber, a

having lan coal supply section above the up er fire chamber with a gas space surroun ing the same, a blastring encircling the furnace adjacent the upper fire chamber, communicating pipes between the blast ring and upper fire chamber, an air supply pipe in communication with the blast ring` means for supplying lair under pressure in communication with one end of said supply pipe, means" whereby theI opposite end thereof has valved com.

munication with the atmosphere and a gas transferring plpe communlcating with said gas space and arranged within said air supv ply pipe.

. In testimony whereof I ax my signature in presence of two witnesses. yROBERT HILPRECHT. Witnesses:

JOHN-J. ZIMMER, IvaM. SPEARS. 

